He's accused of ambushing 30-year-old Jennifer Sebena while she conducted a solo patrol in the predawn hours of Christmas Eve. Prosecutors say he shot her multiple times in the head, and that he told investigators he was a jealous husband.

Ben Sebena's defense attorney, Michael Steinle, has not returned messages seeking comment. Ben Sebena is being held on $1 million cash bail.

Jennifer Sebena was in her second year with the Wauwatosa police department.

Ben Sebena was honorably discharged from the U.S. Marine Corps in 2005.

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